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I-MPU closed bus monitoring system
Picture display
Summary
Technical parameter

Overview

I-MPU is an intelligent multifunctional closed bus monitoring device used in power systems. eMPU can not only monitor the pressure difference, impedance, and temperature of the closed bus, but also can be directly used as an electrical parameter measuring instrument to measure current, voltage, and power. , Harmonics and other electrical parameters; it has the functions of power accumulation, wire system selection, fault record, over-limit alarm, temperature gradient and historical data query; it can monitor 4 passive switch quantities at the same time; I-MPU has 2 relays For output, I-MPU's relay can not only realize remote control, but also can be associated with differential pressure, voltage, current, residual current, frequency, power factor, and temperature to realize alarm control.

The I-MPU closed bus monitoring system is composed of I-MPU-M closed bus monitoring device, I-MPU-H closed bus temperature collection module and I-MPU-T closed bus temperature sensor. The I-MPU-M closed bus monitoring device can be equipped with 16 I-MPU-H closed bus temperature collection modules, and each I-MPU-H closed bus temperature collection module can be connected to 8 I-MPU-T closed bus temperature sensors , TC-BUS-PDC bus communication mode is adopted between the I-MPU-M closed bus monitoring device and the I-MPU-H closed bus temperature collection module, which can realize remote temperature collection up to 240 meters.

The I-MPU-M closed bus monitoring device has a user-oriented open communication protocol, supports RS485 communication interface, supports MODBUS-RTU network communication protocol, and can easily exchange information with various computer monitoring systems.

Technical index

Standards compliant    
GB/T13729-2002 Telecontrol terminal equipment  
GB/T17626.2-2006 Electrostatic discharge immunity test Level 4
GB/T17626.4-2008 Electrical fast transient pulse group immunity test Level 4
GB/T17626.5-2008 Surge immunity test Level 4
Monitoring technical indicators    
Voltage Accuracy: 0.5 level; range: 0-42000VAC
Current Accuracy: 0.5 grade; range: 0-6000AAC
Power factor Accuracy: 1.0; range: 0≤|COSΦ|≤1
Active power Accuracy: 1.0 level; range: 0-756000kW
Reactive power Accuracy: 1.0 level; range: 0-756000kvar
inspecting power Accuracy: 1.0; range: 0-756000kVA
Electricity Accuracy: 1.0 level; range: 0-99999999.9kWh
frequency Accuracy: 0.02Hz; Range: 45Hz-65Hz
Harmonic accuracy Accuracy: Class B
Switch value acquisition Resolution: 2ms; Debounce time: 60ms
temperature Accuracy: ±0.5℃(-10~85℃), ±2℃(-55~-10℃, 85~125℃) Range: -55~+125℃
Differential pressure measurement Accuracy: 0.2 level; range: 30mV~15V
Residual current Accuracy: 0.5 grade, range: 10~1200mA
Working parameters    
Power supply AC or DC power supply 90VAC/DC~265VAC/DC
Power consumption <20W
working environment -20℃~+70℃, 95% non-condensing
storage temperature -30℃~+80℃
display Dot matrix LCD, viewing area 67mm×33mm
Protection level Panel IP50, shell IP20
Input characteristics Phase voltage rating: 220VAC; range: 20VAC~264VAC
Current rating: 5AAC; range: 0.05AAC~6AAC
Current rating: 1AAC; range: 0.01AAC~1.2AAC
Switch quantity acquisition: passive dry node optically isolated input (isolation voltage 1500VDC)
Output characteristics Remote control relay: 250V/5A, AC or 30V/5A, DC
Display update speed <3 seconds;